5/3x6/1x5= (10/1+4/1)x4= (9/8+27/4)x27= 39x38/27= 2/1x15/4+3/1x2/1= 7/5x16x5/21= 12x(2/1-3/1+4/1)=7/12x(6/7+3/14)= 5/1+9/4x8/3+6/5= (5/1-7/1)x70= 97x96/5= 15x7/3+15x7/4= (9/8+4/3-3/2)x72= 5/3x8+5/3x2= 72x(2/1-3/1+4/1)= (这些要简便运算的,上
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![5/3x6/1x5= (10/1+4/1)x4= (9/8+27/4)x27= 39x38/27= 2/1x15/4+3/1x2/1= 7/5x16x5/21= 12x(2/1-3/1+4/1)=7/12x(6/7+3/14)= 5/1+9/4x8/3+6/5= (5/1-7/1)x70= 97x96/5= 15x7/3+15x7/4= (9/8+4/3-3/2)x72= 5/3x8+5/3x2= 72x(2/1-3/1+4/1)= (这些要简便运算的,上](/uploads/image/z/3692502-54-2.jpg?t=5%2F3x6%2F1x5%3D+%2810%2F1%2B4%2F1%29x4%3D+%289%2F8%2B27%2F4%29x27%3D+39x38%2F27%3D+2%2F1x15%2F4%2B3%2F1x2%2F1%3D+7%2F5x16x5%2F21%3D+12x%282%2F1-3%2F1%2B4%2F1%29%3D7%2F12x%286%2F7%2B3%2F14%29%3D+5%2F1%2B9%2F4x8%2F3%2B6%2F5%3D+%285%2F1-7%2F1%29x70%3D+97x96%2F5%3D+15x7%2F3%2B15x7%2F4%3D+%289%2F8%2B4%2F3-3%2F2%29x72%3D+5%2F3x8%2B5%2F3x2%3D+72x%282%2F1-3%2F1%2B4%2F1%29%3D+%EF%BC%88%E8%BF%99%E4%BA%9B%E8%A6%81%E7%AE%80%E4%BE%BF%E8%BF%90%E7%AE%97%E7%9A%84%2C%E4%B8%8A)
5/3x6/1x5= (10/1+4/1)x4= (9/8+27/4)x27= 39x38/27= 2/1x15/4+3/1x2/1= 7/5x16x5/21= 12x(2/1-3/1+4/1)=7/12x(6/7+3/14)= 5/1+9/4x8/3+6/5= (5/1-7/1)x70= 97x96/5= 15x7/3+15x7/4= (9/8+4/3-3/2)x72= 5/3x8+5/3x2= 72x(2/1-3/1+4/1)= (这些要简便运算的,上
5/3x6/1x5= (10/1+4/1)x4= (9/8+27/4)x27= 39x38/27= 2/1x15/4+3/1x2/1= 7/5x16x5/21= 12x(2/1-3/1+4/1)=
7/12x(6/7+3/14)= 5/1+9/4x8/3+6/5= (5/1-7/1)x70= 97x96/5= 15x7/3+15x7/4= (9/8+4/3-3/2)x72= 5/3x8+5/3x2= 72x(2/1-3/1+4/1)= (这些要简便运算的,上面的也一样) 4x15/2= 12/5x8= 3/1x4/1= 9/8x10/3= 9/2x5/3= 14/6x9/7= 8/5x15/4= 20/9x21/5= 25/7x21/15=
5/3x6/1x5= (10/1+4/1)x4= (9/8+27/4)x27= 39x38/27= 2/1x15/4+3/1x2/1= 7/5x16x5/21= 12x(2/1-3/1+4/1)=7/12x(6/7+3/14)= 5/1+9/4x8/3+6/5= (5/1-7/1)x70= 97x96/5= 15x7/3+15x7/4= (9/8+4/3-3/2)x72= 5/3x8+5/3x2= 72x(2/1-3/1+4/1)= (这些要简便运算的,上
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